clevercactus is in first public beta release, even if it missed Bloomsday by a day.
clevercactus share is a private and secure environment to share files with people you know. It is simple and easy to use, it is free for individual users, educational institutions, and non-profit corporations, and it runs on Windows, Mac OS X, and Linux.
Groover for the rest of us?
one of 2 very anticipated tools (Chandler being the other)